Recent content by nczzzzzz

I was thinking of using the doppler effect formula, but i can't figure out the frequency of the source and the receiver.

Homework Statement While standing on 3rd street you hear an approaching ambulance. Its siren oscillates in frequency between about 650 Hz and 750 Hz. Later on as you near your destination, you come upon the scene of the accident. The now-stationary ambulance runs its siren as it's about to...

Homework Statement One way to tune a banjo to itself is to fix the frequency of one string (say, the "A" string) and compare the frequency of the "D" string while held at the seventh fret (so that it should also produce an "A"). If the "D" string is tuned correctly, then the "A" played by the...